The PRDS304 is an older 30-inch Thermador professional range using the ‘PRDS’ prefix, distinct from the modern ‘PRD…WHU’ naming used on current dual-fuel ranges. Thermador’s own Care & Use Manual for this model cross-references 36” and 48” siblings (PRDS36 and PRDS48), confirming it was part of a genuine multi-size professional range family rather than a one-off unit.
As with any older gas range, the most common calls on a PRDS304 are wear-related: burner ignition growing less reliable, oven temperature drifting from the dial setting, and door gaskets losing their seal over years of heat cycling. If a burner won’t light and there’s any smell of gas, shutting off the gas supply to the range comes first, before any other troubleshooting step, and that applies with extra weight on a range of this age where gas-line and valve parts have seen the most cumulative wear.
Key Features
- 30'' Thermador professional range documented under the older 'PRDS' model-number prefix
- Part of a family that also included 36'' and 48'' siblings (PRDS36 and PRDS48) per Thermador's own manual cross-references
- Documented in a dedicated Care & Use Manual
- Predates Thermador's current 'WHU'/'WDHU' naming and Home Connect WiFi
Most Common Issues on This Model
Burner ignition failure on one or more positions
Oven temperature drifting with age
Worn door gasket allowing heat loss during bake or broil
Aging control knob detents becoming loose or slipping
Pilot or igniter part wear typical of older gas ranges